Add tomatoes, onion, corn, salt, pepper, parsley, lime juice, garlic, cumin, chipotle powder, oil, and balsamic vinegar and mix with a spatula until it is incorporated.
4 tomatoes, 1.5 cup frozen corn, 1/2 purple onion, 1/4 teaspoon salt, 1/16 teaspoon pepper, 1 teaspoon dried parsley, 2 ounces lime juice, 1/4 cup olive oil, 1/8 cup balsamic vinegar, 2 cloves garlic, 1 teaspoon ground cumin, 1/4 teaspoon chipotle powder